Chlaenobolus Cass. accepted as Pterocaulon Elliott (original description)
Chlaenobolus alopecuroides (Lam.) Cass. accepted as Pterocaulon alopecuroides (Lam.) DC. (original description)
Chlaenobolus pycnostachyus Cass. accepted as Pterocaulon pycnostachyum (Michx.) Elliott (original description)
Chlaenobolus rugosus (Vahl) Cass. accepted as Pterocaulon spicatum var. brachystachyum DC. accepted as Pterocaulon rugosum (Vahl) Malme accepted as Pterocaulon spicatum var. brachystachyum DC. (original description)
Chlaenobolus spicatus (Labill.) Cass. accepted as Pterocaulon pycnostachyum (Michx.) Elliott (original description)
Chlaenobolus virgatus (L.) Cass. accepted as Pterocaulon virgatum (L.) DC. (original description)
Sogalgina balbisioides (Kunth) Cass. accepted as Tridax balbisioides (Kunth) A.Gray (original description)
Sogalgina trilobata (Cav.) Cass. accepted as Tridax trilobata (Cav.) Hemsl. (original description)
Trimeranthes dichotoma Cass. (original description)